Top 5 Air Conditioner Problems and How to Fix Them

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Manoj Kumar

If you wish your home AC to deliver optimum performance, you must give it proper attention with timely cleaning and upkeep. As an AC owner, it’s also imperative to know the common problems your air conditioner may face over the usage, so you can take the preventive measures on time. Having aware of these issues and their solutions, you can definitely put that unnecessary hassles and hefty repair fees at bay.

So in this article, we’ve listed some common problems related to air conditioner devices, and how they can be fixed.

common air conditioner problems

1) AC Not Cooling Properly

If your AC not cooling happens to you,  more often than not, it’s because of a dirty or clogged filter. Over time, the AC filter may accumulate dust inside, which prevents the airflow. It eventually decreases the unit’s efficiency as well as its cooling ability. 

Solution: Make sure you clean the filters regularly. And whenever needed, you should get them changed. Depending on the quality, filters may last anywhere from 6 to 9 months. Regular cleaning may increase longevity.

Next is to check if the thermostat is set to the correct temperature. Ideally, it should be 5°C lower than your room temperature.

Third, check if there’s dirt in the evaporator or condenser. If yes, clean it carefully. This will help to ensure the proper air supply from the coils.

2) AC Unit Not Turning ON

There could be several reasons for “ac not turning on” error , from disconnected power supply to blown fuses, and a tripped circuit breaker to the wrong thermostat setting. Make sure you check everything properly to find what causes the issue of ac unit nor turning on, so you can take the correct troubleshooting steps.

Solutions: First of all, look for any obstacle in the power supply to your AC system. Make sure the external wiring is intact, and the power switch is active. If you observe any cut in the wire (mice/rat could nibble it), try with different wire. Sometimes all looks fine, but it is not. Resetting the power could do the trick in such a case.

Next, check the thermostat settings. Make sure the cooling mode is on. If the issue persists, have a look at the circuit breaker. Try resetting it by switching it off and on.

If your AC doesn’t turn on even after trying these fixes, chances are the issue is with the battery or internal wires. In that case, call a reliable AC repair service provider like Carlcare to look into it and repair it.

3) Refrigerant Leakage

This is yet another problem that air conditioner owners face, especially after long use of their AC unit. It’s because of formic acid or formaldehyde corrosion in the metal that happens due to constant use over time. The refrigerant leakage not just hampers the unit’s performance but also causes the temperature fluctuation. And since it gets worse with each passing day, you better get it fixed asap.

Solutions: First, let’s know how to keep this issue at bay as long as possible. We suggest you take an annual  air conditioner inspection and maintenance. Hire a trained and professional Technician from a reliable repair agency who can clean the coil and remove the dirt properly.

Cleaning the drain line regularly is another way to prevent this issue.

When it has happened, you should call the technician as soon as possible. Depending on the severity of the situation, this will be fixed by blocking the leakage or replacing the entire components such as the coils.

4) Mold in the Air Conditioner or Ducts

People having Split system ACs and living in humid temperature areas face this issue more. Types of fungi, molds can grow in both the air conditioner and the ducts. And Once they start growing, there’s no end to it. Plus, they bring in lots of issues in your AC and can also be hazardous to your health.

Solution: To prevent the mold growth in your AC system, keep the grates and filters neat and clean.

Second, control the rain and humid outdoor air entering the room. Lesser the moisture inside, lesser the growth of mold.

If they have already forayed into your AC, don’t wait for them to vanish themselves. Instead, try removing them with hot water mixed with about ½ cup of household bleach. Take a scrubber and wipe the inside surfaces as good as you can. Later, rinse with clean water until all the visual signs of molds are finished, and then keep the space dry.

5) AC Making Noises 

Those irritating sounds are certainly a sign that your AC unit is having some serious issue. What’s causing the noise depends upon the kind of sounds coming out. For instance, a hissing sound is an indication of a refrigerant leak. If it’s a loud thumping or banging noise, chances are your unit’s motor or blower is damaged. And for that screeching sound, it is usually the compressor or fan motor that’s having the problem.

Solutions: Call a reliable technician to find and fix the fault. It may be normal wear and tear, an air filter not fitted correctly in its slot, or could be major damage. Having a professional technician looking into the issue, you can rest assured that it will be fixed timely and to perfection.

Carlcare AC Services: Reliable and Affordable

When it comes to repairing or AC servicing, it’s always advised to count on a professional and experienced company like Carlcare Service. An AC unit blends numerous parts and components which are way more intricate then they look. Only trained and qualified technicians can take good care of AC repair and maintenace.  They are well-versed with all the possible issues your AC may develop, and hence assure the best fix at a reasonable cost.

Carlcare is one of the industry leaders in mobile repairing and now aims to deliver our trusted service and support for air conditioner users in India. We’ve initiated our AC repairing, installation, and maintenance services in various parts of India that can be booked from the comfort of your home.

Our experienced and adept technicians are just a call away. Our Hotline Number is: 18004190525


They will take care of the issues, while you sit back and enjoy at home. Our services are prompt and delivered at your doorstep. Professional support, quick response, and a customer-centric work approach make us stand apart.


If you need to know anything about our AC services, you can call us at our Hotline number or contact through our App.